1/* 2 * Copyright (c) 2009 Mans Rullgard <mans@mansr.com> 3 * 4 * This file is part of FFmpeg. 5 * 6 * FFmpeg is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * FFmpeg is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with FFmpeg; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21#include "config.h" 22 23#include "libavutil/aarch64/cpu.h" 24#include "libavcodec/fft.h" 25 26void ff_fft_permute_neon(FFTContext *s, FFTComplex *z); 27void ff_fft_calc_neon(FFTContext *s, FFTComplex *z); 28 29void ff_imdct_calc_neon(FFTContext *s, FFTSample *output, const FFTSample *input); 30void ff_imdct_half_neon(FFTContext *s, FFTSample *output, const FFTSample *input); 31void ff_mdct_calc_neon(FFTContext *s, FFTSample *output, const FFTSample *input); 32 33av_cold void ff_fft_init_aarch64(FFTContext *s) 34{ 35 int cpu_flags = av_get_cpu_flags(); 36 37 if (have_neon(cpu_flags)) { 38 s->fft_permute = ff_fft_permute_neon; 39 s->fft_calc = ff_fft_calc_neon; 40#if CONFIG_MDCT 41 s->imdct_calc = ff_imdct_calc_neon; 42 s->imdct_half = ff_imdct_half_neon; 43 s->mdct_calc = ff_mdct_calc_neon; 44 s->mdct_permutation = FF_MDCT_PERM_INTERLEAVE; 45#endif 46 } 47} 48